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. 2019 Jul 10;74(2):295–304. doi: 10.1161/HYPERTENSIONAHA.119.12956

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© 2019 The Authors.

Hypertension is published on behalf of the American Heart Association, Inc., by Wolters Kluwer Health, Inc. This is an open access article under the terms of the Creative Commons Attribution Non-Commercial-NoDerivs License, which permits use, distribution, and reproduction in any medium, provided that the original work is properly cited, the use is noncommercial, and no modifications or adaptations are made.

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Figure 3. — Myofiber geometry. A, Representative reconstruction of fiber tracts: helix angle (HA) in the left ventricle (LV) changes continuously from positive values in the subendocardium (right-handed helix), over neutral in the mesocardium, to negative values in the subepicardium (left-handed helix). B, Definition of HA-polarity. Mean±SEM (C, D) or medians and quartiles with minimum and maximum values. E, Analysis of HA. Medians and quartiles with minimum and maximum values; n=9–11 per group; Student t test. Endo indicates subendocardium; Epi, subepicardium; and ISO, isoproterenol. *P<0.05 and **P<0.01.